Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1985-12-27
1988-11-29
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 47, D16 10
Patent
active
D02987600
REFERENCES:
patent: D187891 (1960-05-01), Marson
patent: D236029 (1975-07-01), Land
patent: D255582 (1980-06-01), Lackenby
patent: D256128 (1980-07-01), Borisoff
patent: D294034 (1988-02-01), Yoshida et al.
patent: 2638041 (1953-05-01), Horydczak
patent: 3589260 (1971-06-01), Ferra
patent: 3650195 (1972-03-01), Jones
patent: 3821771 (1974-06-01), Johnson
patent: 4697783 (1987-10-01), Kastendieck
Nakazawa Isao
Yoshida Michio
Canon Kabushiki Kaisha
Holtje Nelson C.
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